# Wisconsin — Dam safety hazard classification, inspection frequency, and owner obligations by US state

For Wisconsin, hazard classification is Significant; inspection frequency is every three to four years; mandatory is yes; inspector qualification is professional engineer (PE) with experience in dams; statute is Chapter 31, Wis. Stats, recorded from its source on 2026-08-18.

- **State:** Wisconsin _(verified: appears in the quote below)_
- **Hazard classification:** Significant _(verified: appears in the quote below)_
- **Inspection frequency:** every three to four years _(verified: appears in the quote below)_
- **Mandatory:** yes _(our reading, not quoted from the source)_
- **Inspector qualification:** professional engineer (PE) with experience in dams _(verified: appears in the quote below)_
- **Statute:** Chapter 31, Wis. Stats. _(verified: appears in the quote below)_

## What the source says

> Significant hazard large dams – PE inspection every three to four years

## Source

- https://dnr.wisconsin.gov/topic/dams/inspections.html

Last verified: 2026-08-18. Review by: 2027-08-18.
Part of [Dam safety hazard classification, inspection frequency, and owner obligations by US state](https://referencesource.org/state-dam-safety-classification/).